code review by hf: do merge liangzhifeng codes

@@ -5202,6 +5202,9 @@ $.ajax({
 
         if (data.code === 200) {
             count = data.data.cart_goods_count || 0;
+            if (count === 0) {
+                return false;
+            }
             if (count > 99) {
                 count = '99+';
             }
@@ -5603,7 +5606,6 @@ var $chosePanel = $('#chose-panel'),
     confirming,
     curColorIndex,
     curSizeIndex,
-    $curSizeRow,
     hasChooseColor,
     hasChooseSize,
     $curSizeBlock,
@@ -5615,8 +5617,6 @@ var $chosePanel = $('#chose-panel'),
 
 //初始化购物车面板显示
 function init() {
-    var $firstRow;
-
     hasChooseColor = false;
     hasChooseSize = false;
     $curSizeBlock = null;
@@ -5625,9 +5625,7 @@ function init() {
     $allChoseItems = $('.chose-items');
     $sizeRowList = $('.size-list ul');
     $leftNum = $('#left-num');
-    $firstRow = $sizeRowList.eq(0);
-    $firstRow.toggleClass('hide');
-    $curSizeRow = $firstRow;
+    $sizeRowList.eq(0).toggleClass('hide');
 }
 
 function checkColorSizeNum() {
@@ -5650,6 +5648,7 @@ function show(html, cb) {
         init();
     }
     $('.chose-panel').show();
+    $('body').css('overflow', 'hidden');
     $num = $('#good-num');
     cbFn = cb;
 }
@@ -5657,6 +5656,7 @@ function show(html, cb) {
 //隐藏当前Panel
 function hide() {
     $('.chose-panel').hide();
+    $('body').css('overflow', 'auto');
 }
 
 //修改加入购物车的文字和背景
@@ -5671,18 +5671,19 @@ function updateConformButtonClassAndText() {
 
 //重置颜色块的库存为0的样式
 function resetColorZeroStock($siblingBlock) {
-    var numArray = ($curSizeBlock.data('numstr') + '').split('/'),
+    var numArray,
         i;
 
     if (!hasChooseSize) {
         $siblingBlock.find('ul>li').each(function() {
             $(this).removeClass('zero-stock');
-            if ('0' === $(this).data('num')) {
+            if (0 === $(this).data('num')) {
                 $(this).addClass('zero-stock');
             }
         });
 
     } else {
+        numArray = ($curSizeBlock.data('numstr') + '').split('/');
         for (i = 0; i < numArray.length; i++) {
             if ('0' === numArray[i]) {
                 $siblingBlock.find('.block').eq(i).addClass('zero-stock');
@@ -5711,12 +5712,14 @@ $yohoPage.on('touchstart', '.chose-panel', function(e) {
     hide();
 });
 
-$yohoPage.on('touchstart', '.color-list .block', function(e) {
+$yohoPage.on('touchstart', '.color-list .block', function() {
     var $this = $(this),
         index,
         curSizeBlock,
         $preSiblingBlock,
-        scindex,
+        $curSizeRow,
+        numArray,
+        i,
         curGoodNum;
 
     var $siblingBlock = $this.closest('.block-list').siblings(':first');
@@ -5725,7 +5728,6 @@ $yohoPage.on('touchstart', '.color-list .block', function(e) {
     index = $this.index();
 
     $preSiblingBlock = $siblingBlock.find('.chosed');
-    scindex = $preSiblingBlock.index();
     $curSizeRow = $sizeRowList.eq(index);
 
     // 当前颜色已经是选中状态,再点击时
@@ -5736,6 +5738,16 @@ $yohoPage.on('touchstart', '.color-list .block', function(e) {
         $leftNum.val(0);
         hasChooseColor = false;
 
+        $this.removeClass('zero-stock');
+        if ($curSizeBlock) {
+            numArray = ($curSizeBlock.data('numstr') + '').split('/');
+            for (i = 0; i < numArray.length; i++) {
+                if ('0' === numArray[i]) {
+                    $('.color-list .block').eq(i).addClass('zero-stock');
+                }
+            }
+        }
+
         // 当前颜色不是选中状态,选中时
     } else {
         hasChooseColor = true;
@@ -5747,7 +5759,7 @@ $yohoPage.on('touchstart', '.color-list .block', function(e) {
         // 之前选中的尺码去掉勾选样式
         if ($preSiblingBlock.length > 0) {
             $preSiblingBlock.removeClass('chosed');
-            curSizeBlock = $curSizeRow.children().get(scindex);
+            curSizeBlock = $curSizeRow.children().get(curSizeIndex);
         }
 
         // 当前选中颜色对应的尺码行，其对应的尺码加上勾选样式 (前提是要判断下这个尺码是否存在)
@@ -5775,11 +5787,10 @@ $yohoPage.on('touchstart', '.color-list .block', function(e) {
 
     // 修改颜色时修改商品图片
     changeGoodImgWhenClickColor();
-});
-
-$yohoPage.on('touchstart', '.size-list .block', function(e) {
+}).on('touchstart', '.size-list .block', function() {
     var $this = $(this),
         index,
+        $curSizeRow,
         curGoodNum;
 
     var $siblingBlock = $this.closest('.block-list').siblings(':first');
@@ -5827,7 +5838,6 @@ $yohoPage.on('touchstart', '.size-list .block', function(e) {
 
     // 重置颜色块的样式
     resetColorZeroStock($siblingBlock);
-
 });
 
 $yohoPage.on('touchstart', '.btn-minus', function() {
@@ -5913,7 +5923,6 @@ $yohoPage.on('touchstart', '.btn-minus', function() {
             if (res.code === 200) {
                 $('.num-tag').html(numInCart + buyNumber).removeClass('hide');
                 confirming = false;
-                hide();
 
                 if (cbFn) {
                     cbFn();
@@ -5922,6 +5931,8 @@ $yohoPage.on('touchstart', '.btn-minus', function() {
             if (res.message) {
                 tip.show(res.message);
             }
+
+            hide();
         }).fail(function() {
             tip.show('网络出了点问题~');
         }).always(function() {
@@ -8631,6 +8642,10 @@ $('.advance-buy').on('touchend', function() {
     window.location.href = '/cart/index/advanceBuy?cartType=' + cartType;
 });
 
+$('.freebie').on('touchend', function() {
+    window.location.href = '/cart/index/gift?cartType=' + cartType;
+});
+
 $('.btn-balance').on('touchend', function() {
     if (hasChecked) {
         window.location.href = '/cart/index/orderEnsure?cartType=' + cartType;